270 Win With RL26 Quickload Request

Joec7651 · Nov 16, 2020

I’d like to ask if someone would be kind enough to run Quickload for an E-Tip load I’ve come upon that my rifle really shoots well. I’m not getting any pressure signs but I’d like to make sure I’m not pushing the envelope. The load shoots well under 1moa at 100 yards. The load is as follows.

270 Winchester
24” barrel
Chrono’s at 3128 fps with my Magnetospeed
60.1 grains RL-26
COAL 3.340” at .095” off the lands
130 grain E-Tip that’s HBN coated

It shoots really well but with the lack of load data for this combination I just want to make sure I’m not abusing my rifle. Coating with HBN actually gives me almost zero copper fouling after almost 50 rounds. Thank you in advance.

DrMike · Nov 16, 2020

You appear to be very close to what is projected.

Code:

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Nosler E-Tip 59298
Useable Case Capaci: 59.194 grain H2O = 3.843 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-26 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0   92    54.09   2783    2236   37931  11331     96.1    1.344
-09.0   93    54.69   2819    2294   39288  11465     96.7    1.326
-08.0   94    55.29   2855    2352   40702  11592     97.2    1.307
-07.0   95    55.89   2890    2411   42174  11712     97.6    1.289
-06.0   96    56.49   2926    2471   43709  11825     98.1    1.271
-05.0   97    57.10   2961    2531   45309  11931     98.4    1.250
-04.0   98    57.70   2997    2593   46974  12028     98.8    1.229
-03.0   99    58.30   3033    2655   48721  12118     99.1    1.208
-02.0  100    58.90   3068    2717   50539  12199     99.3    1.188
-01.0  101    59.50   3104    2781   52439  12272     99.6    1.168
+00.0  102    60.10   3139    2844   54423  12336     99.7    1.148
+01.0  103    60.70   3174    2909   56497  12391     99.9    1.128  ! Near Maximum !
+02.0  105    61.30   3210    2974   58668  12437    100.0    1.109  ! Near Maximum !
+03.0  106    61.90   3245    3039   60938  12474    100.0    1.090  ! Near Maximum !
+04.0  107    62.50   3280    3105   63315  12502    100.0    1.072  ! Near Maximum !
+05.0  108    63.11   3315    3172   65806  12528    100.0    1.053  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    102    60.10   3310    3162   68988  11756    100.0    1.045  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    60.10   2888    2408   42776  12115     93.7    1.277

Joec7651 · Nov 16, 2020

Thank you DrMike. That’s within 11 fps of what I’m getting. Thank you for taking the time. Greatly appreciated.

Joec7651 · Nov 16, 2020

I have to say, this TC Venture is turning out to be quite a surprise. It seems to shoot everything pretty well. I put a Boyd’s Prarie Hunter stock on it with a Nikon 3x9x40, and it turned out to be a great shooting, nice looking rifle. I haven’t bedded the action and get less than moa accuracy from it with multiple loads. It’s light, mounts to the shoulder naturally, and shoots much better than more expensive 270’s I’ve owned. I’ve had it for 2 years now and finally decided on the load to take it in the woods with. Not because other loads shot poorly, more that I have other rifles that I’ve taken over the years out of familiarity. She’s earned her chance this year. Thanks again DrMike for running the Quickload numbers for me.